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US20150218753A1 - Sealing device and roller having a sealing device - Google Patents

Sealing device and roller having a sealing device Download PDF

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Publication number
US20150218753A1
US20150218753A1 US14/422,034 US201314422034A US2015218753A1 US 20150218753 A1 US20150218753 A1 US 20150218753A1 US 201314422034 A US201314422034 A US 201314422034A US 2015218753 A1 US2015218753 A1 US 2015218753A1
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US
United States
Prior art keywords
sealing strip
sealing
lubricant
type
end side
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/422,034
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English (en)
Inventor
Marc Erkelenz
Jochen Honold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Assigned to VOITH PATENT GMBH reassignment VOITH PATENT GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ERKELENZ, MARC, HONOLD, JOCHEN
Publication of US20150218753A1 publication Critical patent/US20150218753A1/en
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/10—Suction rolls, e.g. couch rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/162—Special parts or details relating to lubrication or cooling of the sealing itself

Definitions

  • the invention relates to a sealing device according to the preamble of patent claim 1 , and to a roller having a sealing device according to the preamble of patent claim 15 , in particular for use in a machine for manufacturing and/or processing a fibrous web, such as a paper web, cardboard web or tissue web.
  • Suction rollers are used at various points in a machine manufacturing or processing a fibrous web. In this manner, suction rollers are used as doffing rollers, for example, for transferring the fibrous web from one machine section to another machine section. Suction rollers furthermore are used in the drying section of such a machine.
  • Suction rollers possess one or more negative-pressure zones which are in each case sealed in relation to the environment by means of a sealing device.
  • the sealing device here displays a sealing strip which is placed against the inner side of the roller sleeve for sealing the negative-pressure zone
  • wear of the sealing strip in the region of the sealing face occurs, which in turn noticeably reduces the service life of such sealing strips.
  • a lubricant such as water
  • the object of the present invention is thus to further improve the sealing device and roller, which are improved with respect to lubricating efficiency, in such a manner that said sealing device and roller are also employable for suction rollers or blower rollers having a format limiter.
  • the object is achieved by a sealing device for sealing a positive-pressure or negative-pressure zone in a roller which comprises a perforated roller sleeve which is rotatable in relation to the sealing device of a paper-, cardboard-, tissue, or non-woven fabric making machine, wherein the sealing device has at least one sealing strip for sealing the front-side or rear-side of the positive-pressure or negative-pressure zone, when viewed in the rotation direction of the roller, and at least one format limiter for sealing a peripheral end of the positive-pressure or negative-pressure zone, when viewed in the longitudinal direction of the roller and the sealing strip.
  • At least one of the at least one sealing strip here has a front and a rear end side which delimit the sealing strip in its width, and an upper and a lower side.
  • the upper side here provides a sealing face
  • the sealing strip when viewed in its longitudinal direction, has two peripheral regions and a central region disposed therebetween.
  • the sealing strip in the central region provides at least one lubricant opening of the first type, which is formed by a depression in the material of the sealing strip and is open at least toward the upper side, and at least one of the at least one format limiter is disposed so as to be level with one of the two peripheral regions, when viewed in the longitudinal direction of the sealing strip.
  • the format limiter has a sealing face and an end side, which is placed against that end side of the sealing strip that faces toward the positive-pressure or negative-pressure zone.
  • the sealing face of the sealing strip and the format limiter are placed against the inner side of the roller sleeve. Furthermore, the roller sleeve, while turning, runs onto the sealing strip at the front end side thereof, and runs off the sealing strip again at the rear end side thereof.
  • the sealing device according to the invention is characterized in that, at least in the peripheral region in which the end side of the format limiter is placed against the end side of the sealing strip,
  • the sealing strip has at least one lubricant opening of the second type which is open toward the upper side, which is not open toward the end side of the sealing strip against which the end side of the format limiter is placed, and/or
  • the sealing strip is provided with at least one lubricant opening of the third type, which is open toward the upper side, which is additionally open toward that end side of the sealing strip against which the end side of the format limiter is placed, wherein the extent of the lubricant opening of the third type, when viewed in the longitudinal direction of the sealing strip, is the same as or smaller than the extent of the format limiter, and/or
  • the sealing strip at least in portions has no lubricant opening.
  • the sealing strip of the invention in its central region, has at least one lubricant opening which is open at least toward the upper side. Since the upper side of the sealing strip comprises the sealing face which, in the intended use, is placed against the inner side of the roller sleeve, on account thereof, lubricant may be directly and also effectively introduced between the sealing face and the inner side of the roller sleeve.
  • a lubricant opening of the second type which is open toward the upper side of the sealing strip and thus ensures lubrication of the sealing strip in the peripheral region, but is not open toward that end side of the sealing strip that, with the end side of the format limiter, forms the contact region, is proposed, on account of which it is ensured that the contact region between the end side of the format limiter and the sealing strip, in the case of the installation of the sealing device according to the intended use into the roller, when viewed in the direction of the height of the sealing device, extends in an uninterrupted manner up to the two sealing faces of the sealing strip and the format limiter which are placed against the inner side of the roller sleeve.
  • a second variant of the solution according to the feature of patent claim 1 in the peripheral region at least one lubricant opening of the third type, which is open toward the upper side and also the end side of the sealing strip and against which the end side of the format limiter is placed, is proposed.
  • the lubricant opening of the sealing face can be disposed upstream in the rotation direction of the roller sleeve and on account thereof the lubricant can be delivered directly in front of the sealing face, between the inner side of the roller sleeve and the sealing face.
  • the longitudinal extent of the opening of the lubricant opening of the third type in the end side is smaller than or at maximum the same as the longitudinal extent of the format limiter.
  • the at least one peripheral region comprises both a lubricant opening of the second and the third type
  • the latter preferably are separated from one another by a portion without a lubricant opening, i.e. they are not interconnected.
  • the at least one peripheral region comprises a plurality of lubricant openings of the third type which in the longitudinal direction of the sealing strip are disposed behind one another, lubricant openings of the third type which are in each case mutually adjacent preferably are separated from one another by a portion without a lubricant opening, i.e. they are not interconnected.
  • a lubricant opening of the second and/or third type disposed in a peripheral region to be separated from a lubricant opening of the first type which is disposed in the central region by a portion without a lubricant opening, i.e. for them not to be interconnected.
  • a lubricant opening of the second type to be connected to a lubricant opening of the first type by way of a portion having a lubricant opening which substantially extends in the direction of the width of the sealing strip.
  • the format limiter in the peripheral region is displaceable at least in portions in the longitudinal direction of the sealing strip. It is also conceivable for the format limiter in the peripheral region to not be displaceable in the longitudinal direction of the sealing strip.
  • first format limiter which is displaceable in the longitudinal direction of the roller and for a second format limiter which is non-displaceable in the longitudinal direction of the roller to be disposed in the peripheral region. It is particularly conceivable here that the first format limiter is disposed so as to be closer to that roller end that closes off the peripheral region than the second format limiter.
  • the second and the first format limiter are disposed in the peripheral region it is particularly conceivable that the second format limiter, when viewed in the longitudinal direction of the roller, seals an inner positive-pressure or negative-pressure zone, and the first displaceable format limiter seals an outer positive-pressure or negative-pressure zone which is further outboard and which, when viewed in the longitudinal direction of the roller, adjoins the inner positive-pressure or negative-pressure zone and has a lower positive pressure or negative pressure than the inner positive-pressure or negative-pressure zone.
  • At least one format limiter is disposed so as to be level with the respective peripheral region of the sealing strip on both peripheral ends of the positive-pressure or negative-pressure zone.
  • the sealing device when viewed in the rotation direction of the roller, has a front sealing strip which is disposed ahead of the positive-pressure or negative-pressure zone, and a rear sealing strip which is disposed behind the positive-pressure or negative-pressure zone, and that the format limiter extends between the front and rear sealing strip.
  • the format limiter may have a front end side which is placed against the rear end side of the front sealing strip, and a rear end side which is placed against the front end side of the rear sealing strip.
  • At least the rearward of the sealing strips is a sealing strip which in the central region has at least one lubricant opening of the first type and in at least a peripheral region has at least in portions no lubricant opening and/or has a lubricant opening of the second and/or third type.
  • the upper side is formed by the sealing face.
  • the lubricant may be water, for example.
  • a specific design embodiment of the first variant of the sealing device according to the invention may provide, for example, that the lubricant opening of the second and/or third type, when viewed in the direction of the width of the sealing strip, extends between a front portion of the sealing face which adjoins the front end side and a rear portion of the sealing face which adjoins the rear end side.
  • the lubricant opening when viewed in the direction of the width of the sealing strip, is thus surrounded by the sealing face of the sealing strip, wherein in this case substantially only the rear portion of the sealing face, which, in the rotation direction of the roller sleeve, is disposed behind the lubricant opening, is supplied with the lubricant.
  • a further specific design embodiment of the invention provides that the lubricant opening of the first and/or third type, when viewed in the direction of the width of the sealing strip, extends between the front end side and the sealing face. Since the roller sleeve, while turning, runs onto the sealing strip on the latter's end face, then, with the inner side of said roller sleeve, runs over the sealing face, and then runs off the sealing strip again at the rear end side thereof, it is achieved on account thereof that the sealing face is supplied with the lubricant before said sealing face comes into contact with the inner side of the roller sleeve.
  • This embodiment may be specifically implemented such that, when viewed in the direction of the width of the sealing strip, the lubricant opening of the first and/or third type extends from the front end side to the sealing face and the sealing face extends from the lubricant opening of the first and/or third type to the rear end side.
  • the lubricant opening of the first and/or second and/or third type preferably are/is configured as a lubricant channel in the form of a groove-type depression in the material of the sealing strip, which substantially extends in the longitudinal direction of the sealing strip.
  • the first lubricant channel extends substantially across the length of the central region; it is conceivable, for example, for the first lubricant channel to extend across at least 90% of the length of the central region. It is furthermore conceivable for the second lubricant channel to extend substantially across the length of the respective peripheral region, in particular for the second lubricant channel to extend across at least 90% of the length of the peripheral region.
  • a format limiter when viewed in the longitudinal direction of the sealing strip, has an extent of 15 cm or less, often of 6 cm to 3 cm or less, it is particularly conceivable for the extent of the at least one lubricant opening of the third type, when viewed in the longitudinal direction of the sealing strip, to be 10 cm or less, preferably 5 cm or less. In order to obtain a sufficient overlapping region, it may be particularly meaningful for the extent of the lubricant opening of the third type, when viewed in the longitudinal direction of the sealing strip, to correspond to 50% to 80% of the extent of the format slide, when viewed in the longitudinal direction of the sealing strip.
  • lubricant openings of the third type In order to ensure good lubrication across the extent of the at least one peripheral region, in the event of it being implemented with lubricant openings of the third type, it is in particular provided that, when viewed in the longitudinal direction of the sealing strip, a plurality of lubricant openings are disposed behind one another in the peripheral region, wherein in each case one portion without a lubricant opening runs between adjacent third lubricant openings.
  • the sealing face of the sealing strip in the longitudinal direction may have an extent (corresponds to the machine cross direction in the case of the installation according to the intended use of said sealing strip) of 2 meters to 11 meters and more, and in the direction of the width of said sealing strip (corresponds to the machine direction in the case of the installation according to the intended use of said sealing strip) of 1 cm to 30 cm.
  • the sealing face of the format limiter in the machine direction may have an extent of 10 cm to 150 cm, and in the machine cross direction the abovementioned extent of 15 cm or less, often of 6 cm to 3 cm or less.
  • a further preferred design embodiment of the invention provides that the lubricant opening of the first and/or third type, when viewed in a plane which is perpendicular to the longitudinal direction of the sealing strip, has a base and a front and rear side wall, wherein the front side wall extends from the base to the front end side, and the rear side wall extends from the base to the sealing face of the sealing strip, and wherein the front end side and the front side wall, when viewed in the direction of the height of the sealing strip, do not extend up to the sealing face of the sealing strip.
  • the rear wall prefferably enclose an angle of 1° to 89°, in particular of 15° to 75°, with a horizontal.
  • the lubricant is pushed by the air which is entrained by the roller sleeve out of the respective channel into the gap which is formed between the sealing face and the inner side of the roller sleeve, on account of which lubrication efficiency is further increased.
  • a roller for a machine for manufacturing or processing a fibrous web comprising a moveable perforated roller sleeve and a positive-pressure or negative-pressure zone which is disposed within the roller sleeve and is rotationally fixed in comparison with the roller sleeve, and which in relation to the environment is sealed by means of a sealing device as claimed in at least one of claims 1 to 14 .
  • the sealing strip is suitable for use in a sealing device for sealing a positive-pressure or negative-pressure zone in a roller of a paper-, cardboard-, tissue-, or non-woven fabric making machine, which comprises a perforated roller sleeve which is rotatable in relation to the sealing device.
  • the sealing strip has a front and a rear end side, which delimit the sealing strip in its width, and an upper and a lower side.
  • the upper side provides a sealing face which, in the case of the installation of the sealing strip according to the intended use into the sealing device, is placeable against the inner side of the roller sleeve for sealing the positive-pressure or negative-pressure zone.
  • the sealing strip when viewed in the longitudinal direction of the former, has two peripheral regions and a central region which is disposed therebetween. Furthermore, the sealing strip in the central region provides at least one lubricant opening of the first type which is formed by a depression in the material of the sealing strip and is at least open toward the upper side.
  • the sealing strip in the case of the installation in the sealing device according to the intended use, furthermore is suitable for interaction with a format limiter for sealing a peripheral end of the positive-pressure or negative-pressure zone, when viewed in the longitudinal direction of the sealing strip, in so far as said format limiter, when viewed in the longitudinal direction of the sealing strip, is disposed so as to be level with one of the two peripheral regions of the sealing strip and has an end side, which is placed against that end side of the sealing strip that faces toward the positive-pressure or negative-pressure zone, and has a sealing face which is placeable against the inner side of the roller sleeve for sealing the positive-pressure or negative pressure zone.
  • the roller sleeve while turning, furthermore runs onto the sealing strip on the front end side thereof and runs off the sealing strip again on the rear end side thereof.
  • the sealing strip according to the invention is characterized in that, at least in the peripheral region in which the end side of format limiter in the case of the installation into the sealing device of the roller according to the intended use is placed against the end side of said sealing strip,
  • the sealing strip has at least one lubricant opening of the second type which is open toward the upper side, but which is not open toward that end side of the sealing strip onto which the end side of the format limiter is placed and/or
  • At least one lubricant opening of the third type which is open toward the upper side, which is additionally open toward that end side of the sealing strip against which the end side of the format limiter is placed, is provided, wherein the extent of the lubricant opening of the third type, when viewed in the longitudinal direction of the sealing strip, is the same as or smaller than the extent of the format limiter and/or
  • the sealing strip here may be configured so as to be identical to the sealing strip described in claims 1 to 14 and the associated description of the sealing device protected in these claims. That is to say that all advantageous design embodiments and refinements of the sealing device according to the invention which refer to the features of the sealing strip also correspond to advantageous design embodiments and refinements of the sealing strip according to the invention.
  • FIG. 1 shows a first embodiment of a sealing strip of a sealing device according to the invention, in a plan view
  • FIG. 2 shows the sealing strip of FIG. 1 in a sectional plane A-A which runs perpendicularly to the longitudinal axis of the sealing strip
  • FIG. 3 shows the sealing strip of FIG. 1 in a sectional plane B-B which runs perpendicularly to the longitudinal axis of the sealing strip
  • FIG. 4 shows a second embodiment of a sealing strip of a sealing device according to the invention, in a plan view
  • FIG. 5 shows the sealing strip of FIG. 4 in a sectional plane A-A which runs perpendicularly to the longitudinal axis of the sealing strip
  • FIG. 6 shows the sealing strip of FIG. 4 in a sectional plane B-B which runs perpendicularly to the longitudinal axis of the sealing strip
  • FIG. 7 shows a third embodiment of a sealing strip of a sealing device according to the invention, in a plan view
  • FIG. 8 shows the sealing strip of FIG. 7 in a sectional plane A-A which runs perpendicularly to the longitudinal axis of the sealing strip
  • FIG. 9 shows the sealing strip of FIG. 7 in a sectional plane B-B which runs perpendicularly to the longitudinal axis of the sealing strip
  • FIG. 10 shows a roller according to the invention, having a sealing device according to the invention, having two sealing strips according to the first embodiment as shown in FIGS. 1 to 3 , in the sectional plane B-B,
  • FIG. 11 shows the roller according to the invention, having the sealing device according to the invention, having two sealing strips according to the first embodiment as shown in FIGS. 1 to 3 , in the sectional plane A-A, and
  • FIG. 12 shows a fourth embodiment of a sealing strip of a sealing device according to the invention, in a plan view.
  • FIGS. 1 to 3 show a first embodiment of a sealing strip 1 of a sealing device according to the invention, comprising the sealing strip 1 and a format limiter 2 , in a plan view ( FIG. 1 ), and in FIGS. 2 and 3 , the sealing strip 1 shown in FIG. 1 , interacting with a perforated roller sleeve rotating in the rotation direction D, in two sectional planes A-A and B-B which extend perpendicularly to the longitudinal direction L of the sealing strip.
  • the sealing strip 1 when viewed in its longitudinal direction L, is only illustrated in portions.
  • the sealing strip 1 has a front end side 4 and a rear end side 3 lying opposite thereto, by way of which the sealing strip 1 is delimited in its width.
  • the sealing strip 1 furthermore has an upper side 5 and a lower side 5 a which delimit the sealing strip in its height, wherein in the present exemplary embodiment the upper side 5 provides a sealing face 6 which is drawn in a punctiform manner and forms the upper side 5 .
  • the sealing strip 1 when viewed in its longitudinal direction L, has two peripheral regions 7 , of which presently one peripheral region 7 is visible, and a central region 8 disposed therebetween, which presently is shown only in portions.
  • the format limiter 2 is presently displaceable in the longitudinal direction L of the sealing strip 1 in the peripheral region 7 .
  • the shown sealing strip 1 has a lubricant opening of the first type, which is formed by a depression and is open toward the upper side 5 and to the front side 4 , and which presently is configured as a lubricant channel 9 in the form of a groove-type depression in the material of the sealing strip 1 , extending in its longitudinal direction in the longitudinal direction L of the sealing strip 1 , through which, in the case of the installation of the sealing strip into a roller according to the intended use, lubricant is deliverable between the inner side 13 of the roller sleeve 14 and the sealing face 6 .
  • the first lubricant channel 9 in its longitudinal direction, extends on substantially the entire length of the central region 8 .
  • the first lubricant channel 9 when viewed in the direction of the width of the sealing strip 1 , is disposed between the front end side 4 and the sealing face 6 . As can be derived from the illustration of FIG.
  • the first lubricant channel 9 has a base 10 and a front side wall 11 and a rear side wall 12 , wherein the front side wall 11 extends from the base 10 to the front end side 4 , and the rear side wall 12 extends from the base 10 to the sealing face 6 of the sealing strip 1 , and wherein the front end side 4 and the front side wall 11 , when viewed in the direction of the height H of the sealing strip 1 , do not extend up to the sealing face 6 of the sealing strip 1 .
  • a gap is formed between the front end side 4 and the inner side 13 of a roller sleeve 14 , which gap tapers off toward the sealing face 6 .
  • the sealing strip 1 has a lubricant opening of the second type, which is open toward the upper side 5 , but not toward the front end side 4 , against which the format limiter 2 with its end side is placed.
  • the lubricant opening of the second type 15 is presently configured as a second lubricant channel 15 in the form of a groove-type depression in the material of the sealing strip 1 .
  • the second lubricant channel 15 in its longitudinal direction, extends in the longitudinal direction L of the sealing strip 1 , specifically substantially across the entire length of the peripheral portion 7 . As can be derived from FIG.
  • the second lubricant channel 15 in the direction of the width B, extends between a front portion 6 a of the sealing face 6 , which adjoins the front end side 4 , and a rear portion 6 b of the sealing face 6 , which adjoins the rear end side 3 .
  • the sealing face 6 in the peripheral region 7 is subdivided by the second lubricant channel 15 into a front portion 6 a and a rear portion 6 b.
  • first lubricant channel 9 in the longitudinal direction L of the sealing strip 1 , has a larger extent than the second lubricant channel 15 .
  • a small portion 16 in which no lubricant opening runs is disposed between the first lubricant channel 9 and the second lubricant channel 15 , when viewed in the longitudinal direction L of the sealing strip 1 .
  • Both lubricant channels 9 , 15 are connected to a lubricant supply line by way of which the former are supplied with the lubricant.
  • the lubricant supply line comprises a central supply duct 17 which extends in the longitudinal direction of the sealing strip 1 and from which a plurality of riser lines 18 which are disposed behind one another in the longitudinal direction L and which end in the base of the respective lubricant channel 9 , 15 , emanate.
  • FIGS. 4 to 6 show a second embodiment of a sealing strip 1 of a sealing device according to the invention which comprises the sealing strip 1 and a format limiter 2 , in a plan view ( FIG. 4 ), and in FIGS. 5 and 6 , the sealing strip 1 interacting with a perforated roller sleeve rotating in the rotation direction D, in two sectional planes A-A and B-B which extend perpendicularly to the longitudinal direction L of the sealing strip.
  • the sealing strip 1 in the peripheral region 7 has a plurality of lubricant opening of the third type which in the longitudinal direction are disposed behind one another and which are open toward the upper side 5 and toward the front end side 4 against which the format limiter 2 with its end side is placed.
  • the extent of the lubricant opening of the third type 19 toward the front end side 4 when viewed in the longitudinal direction L of the sealing strip 1 , is the same as or smaller than the extent of the format limiter 2 .
  • Adjacent lubricant openings of the third type 19 are in each case separated from one another in the longitudinal direction 20 by a portion 20 without a lubricant opening.
  • the arrangement of lubricant openings of the third type 19 and portions 20 without lubricant openings extends in the longitudinal direction L of the sealing strip 1 , specifically substantially across the entire length of the peripheral portion 7 .
  • the lubricant openings of the third type 19 in the direction of the width B extend between the front end side 4 and the sealing face 6 .
  • the first lubricant channel 9 in the longitudinal direction L of the sealing strip 1 has a larger extent than the lubricant openings of the third type 19 .
  • a small portion 16 in which no lubricant opening runs is disposed between the first lubricant channel 9 and the lubricant openings of the third type 19 , when viewed in the longitudinal direction L of the sealing strip 1 .
  • FIG. 1 A small portion 16 in which no lubricant opening runs is disposed between the first lubricant channel 9 and the lubricant openings of the third type 19 , when viewed in the longitudinal direction L of the sealing strip 1 .
  • the lubricant opening of the third type 19 in the shown sectional plane has a base 21 and a front side wall 22 and a rear side wall 23 , wherein the front side wall 22 extends from the base 21 to the front end side 4 , and the rear side wall 23 extends from the base 21 to the sealing face 6 of the sealing strip 1 , and wherein the front end side 4 and the front side wall 21 , when viewed in the direction of the height H of the sealing strip 1 , do not extend up to the sealing face 6 of the sealing strip 1 .
  • a gap is formed between the front end side 4 and the inner side 13 of a roller sleeve 14 , which gap tapers off toward the sealing face 6 .
  • FIGS. 7 to 9 show a third embodiment of a sealing strip 1 of a sealing device according to the invention, comprising the sealing strip 1 and a format limiter 2 , in a plan view ( FIG. 7 ), and in FIGS. 8 and 9 , the sealing strip 1 interacting with a perforated roller sleeve rotating in the rotation direction D, in two sectional planes A-A and B-B which extend perpendicularly to the longitudinal direction L of the sealing strip.
  • the sealing strip 1 in the peripheral region 7 has no lubricant opening.
  • the rear side wall encloses an angle of 1° to 89°, in particular 15° to 75°, with a horizontal.
  • FIGS. 10 and 11 show a roller according to the invention, for a machine for manufacturing or processing a fibrous web, having a sealing device according to the invention, having two sealing strips according to the first embodiment as shown in FIGS. 1 to 3 , in the sectional plane B-B ( FIG. 10 ) and A-A ( FIG. 11 ).
  • the roller has a perforated roller sleeve 14 which is movable in the rotation direction D and a positive-pressure or negative-pressure zone 24 which is disposed within the roller sleeve 14 and is rotationally fixed in comparison with the roller sleeve, and which in relation to the environment is sealed by means of a sealing device having two sealing strips as described in FIGS. 1 to 3 , at the front side and rear side and, in each peripheral region, by means of a format limiter 2 as described in FIGS. 1 to 3 .
  • the sealing device when viewed in the rotation direction D of the roller sleeve, has a front sealing strip 1 a , which is disposed ahead of the positive-pressure or negative-pressure zone 24 , and a rear sealing strip 1 b , which is disposed behind the positive-pressure or negative-pressure zone 24 , and in each peripheral region 7 a format limiter 2 , which extends between the front and rear sealing strips 1 a , 1 b .
  • the front and the rear sealing strip 1 a , 1 b are identically configured. It can be derived from the illustration of FIG.
  • the format limiter 2 has a sealing face 25 and a front end side 26 which is placed against the rear end side 3 of the front sealing strip 1 a , and furthermore a rear end side 27 which is placed against the front end side 4 of the rear sealing strip 1 b . Furthermore, the sealing faces 6 of the sealing strips 1 a , 1 b , and the sealing face 25 of the format limiter 2 are placed against the inner side 13 of the roller sleeve 14 .
  • the roller sleeve 14 while turning, at the front end side 4 runs onto the respective sealing strip 1 , 1 a , 1 b , and at the rear end side 3 runs off said sealing strip 1 , 1 a , 1 b again.
  • FIG. 12 shows a fourth embodiment of a sealing strip of a sealing device according to the invention, in a plan view, which corresponds to the sealing strip 1 shown in FIGS. 1 to 3 and differs therefrom only in that a connection channel 28 , which runs substantially in the direction of the width B of the sealing strip 1 , extends between the lubricant channel of the first type 9 and the lubricant channel of the second type 15 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Rolls And Other Rotary Bodies (AREA)
US14/422,034 2012-08-15 2013-08-05 Sealing device and roller having a sealing device Abandoned US20150218753A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012214536.2 2012-08-15
DE102012214536 2012-08-15
PCT/EP2013/066376 WO2014026869A1 (fr) 2012-08-15 2013-08-05 Dispositif d'étanchéité et cylindre comprenant un dispositif d'étanchéité

Publications (1)

Publication Number Publication Date
US20150218753A1 true US20150218753A1 (en) 2015-08-06

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Application Number Title Priority Date Filing Date
US14/422,034 Abandoned US20150218753A1 (en) 2012-08-15 2013-08-05 Sealing device and roller having a sealing device

Country Status (4)

Country Link
US (1) US20150218753A1 (fr)
EP (1) EP2885454A1 (fr)
CN (1) CN104583488A (fr)
WO (1) WO2014026869A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130328272A1 (en) * 2011-02-14 2013-12-12 Voith Patent Gmbh Sealing device
US20150204014A1 (en) * 2012-08-15 2015-07-23 Voith Patent Gmbh Sealing device, suction roll and method for producing and/or processing a paper, cardboard or tissue web
US20160002854A1 (en) * 2012-08-15 2016-01-07 Voith Patent Gmbh Suction roll for a machine for producing and/or processing a paper, cardboard or tissue web

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JP7016100B2 (ja) * 2020-02-04 2022-02-04 株式会社長谷川鉄工所 サクションロールにおけるシール装置

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US20130328272A1 (en) * 2011-02-14 2013-12-12 Voith Patent Gmbh Sealing device
US9752683B2 (en) * 2011-02-14 2017-09-05 Voith Patent Gmbh Sealing device
US20150204014A1 (en) * 2012-08-15 2015-07-23 Voith Patent Gmbh Sealing device, suction roll and method for producing and/or processing a paper, cardboard or tissue web
US20160002854A1 (en) * 2012-08-15 2016-01-07 Voith Patent Gmbh Suction roll for a machine for producing and/or processing a paper, cardboard or tissue web
US9506191B2 (en) * 2012-08-15 2016-11-29 Voith Patent Gmbh Suction roll for a machine for producing and/or processing a paper, cardboard or tissue web
US9650743B2 (en) * 2012-08-15 2017-05-16 Voith Patent Gmbh Sealing device, suction roll and method for producing and/or processing a paper, cardboard or tissue web
US10113647B2 (en) * 2012-08-15 2018-10-30 Voith Patent Gmbh Sealing strip for a sealing device in a machine for processing a paper, cardboard, or tissue web

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EP2885454A1 (fr) 2015-06-24
WO2014026869A1 (fr) 2014-02-20

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